Gaya APA
Riyanto, S. et al (2010).
Essentials of English Vocabularies Fopr Fluent Speaking (-1).
Yogyakarta:
Pustaka Pelaajar.
Gaya MLA
Riyanto, Slamet. et al.
"Essentials of English Vocabularies Fopr Fluent Speaking".
-1
Yogyakarta:
Pustaka Pelaajar,
2010.
Text.